DE1704568A1 - Process for the production of plasticizer-containing, surface-matted polyvinyl butyral films which can be used directly in the production of laminated glass - Google Patents

Process for the production of plasticizer-containing, surface-matted polyvinyl butyral films which can be used directly in the production of laminated glass

Info

Publication number
DE1704568A1
DE1704568A1 DE19671704568 DE1704568A DE1704568A1 DE 1704568 A1 DE1704568 A1 DE 1704568A1 DE 19671704568 DE19671704568 DE 19671704568 DE 1704568 A DE1704568 A DE 1704568A DE 1704568 A1 DE1704568 A1 DE 1704568A1
Authority
DE
Germany
Prior art keywords
production
polyvinyl butyral
laminated glass
films
plasticizer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE19671704568
Other languages
German (de)
Other versions
DE1704568B2 (en
DE1704568C (en
Inventor
Rolf Dr Beckmann
Hans-Georg Dr Groeblinghoff
Wolfgang Dr Jensch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dynamit Nobel AG filed Critical Dynamit Nobel AG
Publication of DE1704568A1 publication Critical patent/DE1704568A1/en
Publication of DE1704568B2 publication Critical patent/DE1704568B2/en
Application granted granted Critical
Publication of DE1704568C publication Critical patent/DE1704568C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10559Shape of the cross-section
    • B32B17/10568Shape of the cross-section varying in thickness
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/32Coiling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Surface Heating Bodies (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

Troisdorf, den 28.2.1967Troisdorf, February 28, 1967

DYNAMIT NOBEL AKTIENGESELLSCHAFT Troisdorf / Bez. KölnDYNAMIT NOBEL AKTIENGESELLSCHAFT Troisdorf / District Cologne

Verfahren zur Herstellung von bei der Verbundglaserzeugung direkt einsetzbaren weichmacherhaltigen, oberflächenmattierten Polyvinyl butyralfolienProcess for the production of laminated glass directly usable plasticizer-containing, matt-finished polyvinyl butyral films

Weichmacherhaltige Folien aus Polyvinylbutyral zur HerstellungPlasticized films made from polyvinyl butyral for manufacture

von Sicherheitsverbundglas besitzen eine sehr hohe Klebrigkeit. ™of laminated safety glass have a very high tack. ™

Fm ein Verkleben der Folien untereinander auf gespulten RollenFm gluing the foils to one another on spooled rolls

zu verhindern, werden daher die Folien unter Verwendung vonto prevent, therefore, the foils are using

Natriumbikarbonatpuder als trennende Zwischenschicht aufgef>ult.Sodium bicarbonate powder used as a separating intermediate layer. Dieses Natriumbikarbonat muß aber vor der Verarbeitung der FolienHowever, this sodium bicarbonate must be used before the foils can be processed

durch Vaschen mit Wasser entfernt werden. Hierzu benutzen größereremoved by washing with water. To do this, use larger ones

Verbuüdglashersteller automatisch arbeitende Waschmaschinen vonComposite glass manufacturer automatically working washing machines from

hohem Anschaffungewert. Trotzdem entsteht jedoch häufig einhigh purchase value. Nonetheless, however, there is often a erhebliche? Ausschuß infolge Verunreinigung der Scheiben durchsignificant? Scrap due to contamination of the panes

nicht rollttändig entfernte· latriuabikarbonat. λ · latriu bicarbonate not removed by rolling. λ

Ein weiterer, noch größerer Nachteil de· Waschen· der Folien vor der Verarbeitung igt die je nach den Bedingungen unterschiedliche Waeeeraufnalme bei« Waiohprozeß. Zur Herstellung insbesondere von Sicherheitsverbundglas für Xraftfahraeufeoheiben können Rämlioh nur Folytinylbutyralfolien »it genau iefiniertea WassergehaltAnother, even greater disadvantage is the pre-washing of the films The processing igt different depending on the conditions Waeeeraufnalme at «Waiohprozess. For the production of in particular Laminated safety glass for motor vehicles can Rämlioh only folytinyl butyral films »with precisely defined water content verwendet werden, wenn die außerordentlich hohen Anforderungenused when the extraordinarily high requirements

"■■■■ -. .-"■*"■■■■ -. .-" ■ *

hineiohtlioh der aeohanisohen Sohlagftstigkeiten erfüllt werden •ollen« felyvinyliutjrralfolien «it eine« Wassergehalt, der von de» Wseeergehalt «erklich abweieht, ergeeen nämlich Ver-inside the aeohanic solitary activities are fulfilled • ollen «felyvinyliutjrralfolien« it has a «water content that depends on the» Wseeer salary "deviates significantly, namely ergeeen

" 2- 1Qt82t7l92 3"2- 1Qt82t7l92 3

bundaoheiben, deren Schlagfestigkeit unter Umständen weniger als den halben Wert von optimal eingestelltem Material erreicht. Die hier gemeinte Schlagfeatigke.it wird gemessen durch die maximale Fallhöhe eines in der Regel 10 kg schweren Fallkörpers, bei der die Verbundscheibe noch nicht durchschlagen wird. Der FaIl-Jcörper ist dem Kopf und den Schultern des Menschen nachgebildet und wird "Phantom" genannt.bundaoheiben, the impact strength of which may be less than reaches half the value of the optimally set material. The Schlagfeatigke.it meant here is measured by the maximum Height of fall of a falling body, usually weighing 10 kg, at which the composite pane is not yet penetrated. The fall body is modeled on the head and shoulders of humans and is called "phantom".

Die Einstellung der Polyvinylbutyralfolien auf den optimalen Wassergehalt erfolgt nach dem Waschprozeß durch mehrstündiges Lagern der Folien in Räumen von bestimmter Lufttemperatur und bestimmter relativer Luftfeuchtigkeit. Hierzu sind aber aufwendige Klimaeinrichtungen bei den Verbundglaserzeugern erforderliche The adjustment of the polyvinyl butyral films to the optimum water content takes place after the washing process by storing the films for several hours in rooms with a certain air temperature and a certain relative humidity. But for this are complex air conditioning systems in de n laminated glass producers required

Gegenstand der vorliegenden Erfindung ist nun ein Verfahren zur Herstellung von bei der Verbundglaserzeugung direkt einsetzbaren weichmacherhaltigen, oberflächenmattierten Polyvinylbutyralfolien, welches dadurch gekennzeichnet ist, daß man bereits mit dem gewünschten Wassergehalt versehene Folien zusammen mit einer als Trennschicht wirkenden Einlage aus einer gegebenenfalls mattierten Polyolefinfolie aufspult und die so erhaltenen Rollen luft- und feuchtigkeitsdicht verpackt. Der Wassergehalt der Butyralfolien wird so bei der Verarbeitung durch.keinen Waschprozeß beeinflußt. Die unerläßliche, zarte Oberflächenmattierung der Polyvinylbutyralfolien wird bei dem Verfahren gemäß der Erfindung überraschenderweise nicht beeinträchtigt.The present invention now relates to a process for the production of products which can be used directly in the production of laminated glass plasticized, matt-finished polyvinyl butyral films, which is characterized in that you already provided with the desired water content films together with a acting as a separating layer is wound up from an optionally matted polyolefin film and the rolls obtained in this way packed airtight and moisture-proof. The water content of the butyral foils is not washed during processing influenced. The indispensable, delicate surface matting of the polyvinyl butyral films is in the process according to Surprisingly, the invention is not affected.

Als Polyolefinfolien können beispielsweise solche aus »iederdruckpolyäthylen, Hochdruckpolyäthylen oder Polypropylen verwendet werden. Aus Kostengründen sind sehr geringe Trennfoliendicken, z.B. von etwa 20 - 50 λο zu bevorzugen·As polyolefin films, for example, those made of low-pressure polyethylene, High pressure polyethylene or polypropylene can be used. For reasons of cost, very small separating film thicknesses are required, e.g. from about 20 - 50 λο to be preferred

- 3 - 109821/1923- 3 - 109821/1923

■---■--■--■ ORIGINAL INSPECTED■ --- ■ - ■ - ■ ORIGINAL INSPECTED

Der optimale Wassergehalt der Butyralfolien liegt bei etwa 0,4 - 1» vorzugsweise bei 0,5 - 0,8 Gew.-^. Er kann bei der Herstellung der Butyralfolien auf einfachere Weise eingestellt werden als dies dem Yerarbeiter durch Klimatisieren nach dem Waschprozeß möglich ist. Es genügt die Zugabe der entsprechenden Wassermenge zu den Rohstoffen bei der Extruderherstellung der Butyralfolien, oder aber es wird Wasser zu den Rohstoffen in geringer Überschußmenge zugegeben, und diese Überschußmenge wird durch kurzzeitige, partielle, kontrollierte Trocknung des endlosen Butyralfolienbandes mittels Infrarot-Strahlern o. dergl. ■ während der Fertigung entfernt.The optimal water content of the butyral foils is around 0.4-1 »preferably at 0.5-0.8 wt .- ^. He can with the Production of the butyral films can be adjusted in a simpler manner than this by air conditioning after the worker Washing process is possible. It is sufficient to add the appropriate amount of water to the raw materials in the extruder manufacture Butyral sheeting, or else it becomes the raw materials in water added small excess amount, and this excess amount is achieved by short-term, partial, controlled drying of the endless butyral film band by means of infrared emitters or the like. ■ removed during manufacture.

Neuerdings hat man auch versucht, die eingangs erwähnten Nachteile dadurch zu beseitigen, daß man ungepuderte Polyvinylbutyralfolien in unterkühltem Zustand lieferte, um ein Verkleben auf der Rolle zu vermeiden. Hierbei benötigt jedoch der Yerbundglashersteller besondere Kühlräume öder Kühltruhen, d.h. ebenfalls einen zusätzlichen kostspieligen Aufwand, der bei dem Verfahren gemäß der vorliegenden Erfindung in Fortfall kommt. Auch die Herstellung der unterkühlten Folien selbst ist umstand- ä lieh und teuer. 'Recently, attempts have also been made to eliminate the disadvantages mentioned at the outset by supplying unpowdered polyvinyl butyral films in a supercooled state in order to avoid sticking to the roll. In this case, however, the composite glass manufacturer requires special cooling rooms or freezers, that is to say likewise an additional costly effort, which is eliminated with the method according to the present invention. The production of the supercooled film itself is like umstand- borrowed and expensive. '

- 4-- 4-

109821/1923109821/1923

Claims (1)

Patentanspruch:Claim: Verfahren zur Herstellung von "bei der VerbundglaserzeugungProcess for the manufacture of "in the manufacture of laminated glass _ direkt einsetz baren_ w ei chma_cher hai t i genj_ ob e rfläohenmattierten _ Directly usable_ w ei chma_cher hai ti genj_ ob e rflaohenmattie rte n Polyvinylbutyralfolien, dadurch gekennzeichnet, daß man bereits mit dem gewünschten Wassergehalt versehene Folien zusammen mit einer als Trennschicht wirkenden Einlage aus einer gegebenenfalls mattierten Polyolefinfolie aufspult und die so erhaltenen Rollen luft- und feuchtigkeitsdicht verpackt.Polyvinyl butyral films, characterized in that one already foils provided with the desired water content together with an insert, which acts as a separating layer, made of an optionally matted polyolefin film and the resulting rolls are packed airtight and moisture-tight. -Dr.Lli/Hä.-Dr.Lli / Hä. 109821/ 1923 copr109821/1923 copr
DE19671704568 1967-03-02 1967-03-02 Process for the production of a storable roll from a plasticizer-containing, surface matt polyvinyl butyral film which can be used in the production of laminated glass Expired DE1704568C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DED0052415 1967-03-02
DED0052415 1967-03-02

Publications (3)

Publication Number Publication Date
DE1704568A1 true DE1704568A1 (en) 1971-05-19
DE1704568B2 DE1704568B2 (en) 1973-02-15
DE1704568C DE1704568C (en) 1973-09-06

Family

ID=

Also Published As

Publication number Publication date
LU55599A1 (en) 1968-05-21
FR1560693A (en) 1969-03-21
CA939652A (en) 1974-01-08
FI49370B (en) 1975-02-28
FI49370C (en) 1975-06-10
DE1704568B2 (en) 1973-02-15
BE711505A (en) 1968-07-01
GB1214202A (en) 1970-12-02
SE405945B (en) 1979-01-15
US3524778A (en) 1970-08-18
NL159916B (en) 1979-04-17
SU499789A3 (en) 1976-01-15
AT301861B (en) 1972-09-25
CH467662A (en) 1969-01-31
SE6802754A (en) 1979-01-15
NL6802933A (en) 1968-09-03
NL159916C (en) 1979-09-17

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977